git: 690601f0b4c3 - main - amd64: Add static asssert for context size
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Date: Thu, 10 Feb 2022 21:34:00 UTC
The branch main has been updated by imp: URL: https://cgit.FreeBSD.org/src/commit/?id=690601f0b4c381b09295eecd08dfe5041d17445a commit 690601f0b4c381b09295eecd08dfe5041d17445a Author: Warner Losh <imp@FreeBSD.org> AuthorDate: 2022-02-10 21:27:01 +0000 Commit: Warner Losh <imp@FreeBSD.org> CommitDate: 2022-02-10 21:32:20 +0000 amd64: Add static asssert for context size Add a static assert for the siginfo_t, mcontext_t and ucontext_t sizes. These are de-facto ABI options and cannot change size ever. Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D34212 --- sys/amd64/amd64/exec_machdep.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sys/amd64/amd64/exec_machdep.c b/sys/amd64/amd64/exec_machdep.c index 233f222b49f1..f66203d1812e 100644 --- a/sys/amd64/amd64/exec_machdep.c +++ b/sys/amd64/amd64/exec_machdep.c @@ -95,6 +95,10 @@ __FBSDID("$FreeBSD$"); #include <machine/specialreg.h> #include <machine/trap.h> +_Static_assert(sizeof(mcontext_t) == 800, "mcontext_t size incorrect"); +_Static_assert(sizeof(ucontext_t) == 880, "ucontext_t size incorrect"); +_Static_assert(sizeof(siginfo_t) == 80, "siginfo_t size incorrect"); + /* * Send an interrupt to process. *